diff --git a/core/assets/bundles/bundle.properties b/core/assets/bundles/bundle.properties
index fa50837ef9..6ce4ca5124 100644
--- a/core/assets/bundles/bundle.properties
+++ b/core/assets/bundles/bundle.properties
@@ -1444,6 +1444,8 @@ rules.hidebannedblocks = Hide Banned Blocks
 rules.infiniteresources = Infinite Resources
 rules.fillitems = Fill Core With Items
 rules.onlydepositcore = Only Allow Core Depositing
+rules.coreunloaders = Allow Core Unloaders
+rules.coreunloaders.info = When enabled, Serpulo unloaders can take items from the core.\nDoes not affect Erekir unloaders.
 rules.derelictrepair = Allow Derelict Block Repair
 rules.reactorexplosions = Reactor Explosions
 rules.coreincinerates = Core Incinerates Overflow
diff --git a/core/src/mindustry/game/Rules.java b/core/src/mindustry/game/Rules.java
index 370909f539..2697a1d8b1 100644
--- a/core/src/mindustry/game/Rules.java
+++ b/core/src/mindustry/game/Rules.java
@@ -120,6 +120,8 @@ public class Rules{
     public boolean cleanupDeadTeams = true;
     /** If true, items can only be deposited in the core. */
     public boolean onlyDepositCore = false;
+    /** If true, Serpulo unloaders can take items from the core. */
+    public boolean allowCoreUnloaders = true;
     /** Cooldown, in seconds, of item depositing for players. */
     public float itemDepositCooldown = 0.5f;
     /** If true, every enemy block in the radius of the (enemy) core is destroyed upon death. Used for campaign maps. */
diff --git a/core/src/mindustry/mod/ContentParser.java b/core/src/mindustry/mod/ContentParser.java
index 39b812bb40..64f285c15d 100644
--- a/core/src/mindustry/mod/ContentParser.java
+++ b/core/src/mindustry/mod/ContentParser.java
@@ -394,6 +394,13 @@ public class ContentParser{
             }
         }
 
+        @Override
+        protected Object newInstance(Class type){
+            Object o = super.newInstance(type);
+            onNewInstance(o, type);
+            return o;
+        }
+
         @Override
         public <T> T readValue(Class<T> type, Class elementType, JsonValue jsonData, Class keyType){
             T t = internalRead(type, elementType, jsonData, keyType);
@@ -1347,6 +1354,8 @@ public class ContentParser{
         Log.warn(string, format);
     }
 
+    void onNewInstance(Object object, Class<?> type){}
+
     public Json getJson(){
         checkInit();
         return parser;
diff --git a/core/src/mindustry/ui/dialogs/CustomRulesDialog.java b/core/src/mindustry/ui/dialogs/CustomRulesDialog.java
index 14cbaa5f62..599352dccc 100644
--- a/core/src/mindustry/ui/dialogs/CustomRulesDialog.java
+++ b/core/src/mindustry/ui/dialogs/CustomRulesDialog.java
@@ -162,6 +162,7 @@ public class CustomRulesDialog extends BaseDialog{
         check("@rules.alloweditworldprocessors", b -> rules.allowEditWorldProcessors = b, () -> rules.allowEditWorldProcessors);
         check("@rules.infiniteresources", b -> rules.infiniteResources = b, () -> rules.infiniteResources);
         check("@rules.onlydepositcore", b -> rules.onlyDepositCore = b, () -> rules.onlyDepositCore);
+        check("@rules.coreunloaders", b -> rules.allowCoreUnloaders = b, () -> rules.allowCoreUnloaders);
         check("@rules.derelictrepair", b -> rules.derelictRepair = b, () -> rules.derelictRepair);
         check("@rules.reactorexplosions", b -> rules.reactorExplosions = b, () -> rules.reactorExplosions);
         check("@rules.schematic", b -> rules.schematicsAllowed = b, () -> rules.schematicsAllowed);
diff --git a/core/src/mindustry/world/blocks/storage/CoreBlock.java b/core/src/mindustry/world/blocks/storage/CoreBlock.java
index a11be3c21f..aa593ef25f 100644
--- a/core/src/mindustry/world/blocks/storage/CoreBlock.java
+++ b/core/src/mindustry/world/blocks/storage/CoreBlock.java
@@ -276,6 +276,11 @@ public class CoreBlock extends StorageBlock{
             commandPos = target;
         }
 
+        @Override
+        public boolean canUnload(){
+            return block.unloadable && state.rules.allowCoreUnloaders;
+        }
+
         @Override
         public void draw(){
             //draw thrusters when just landed
diff --git a/core/src/mindustry/world/blocks/storage/StorageBlock.java b/core/src/mindustry/world/blocks/storage/StorageBlock.java
index fea47a0e88..eb2c86281c 100644
--- a/core/src/mindustry/world/blocks/storage/StorageBlock.java
+++ b/core/src/mindustry/world/blocks/storage/StorageBlock.java
@@ -53,6 +53,11 @@ public class StorageBlock extends Block{
             return linkedCore != null ? linkedCore.acceptItem(source, item) : items.get(item) < getMaximumAccepted(item);
         }
 
+        @Override
+        public boolean canUnload(){
+            return linkedCore == null ? super.canUnload() : linkedCore.canUnload();
+        }
+
         @Override
         public void handleItem(Building source, Item item){
             if(linkedCore != null){